Every amplifier has inputs and outputs (which is not to be confused with an amplifier’s internal input and output sections). Inputs are where the signal from a head unit goes into the amplifier, and the outputs are where it leaves the amplifier for the speakers. Plus, there are connections for power-supply input, ground, and the 12-volt turn-on wire that tells an amplifier to wake up when a head unit is turned on.
or Driving Your Subwoofer
Inputs are usually RCA jacks that are typically gold-plated to ensure a good connection and guard against corrosion. But as mentioned above, inputs can also be of the balanced-line variety.see also Structuring Wire Runs
Outputs can be one of two general types. The most common is a screw terminal (see Figure 12-6) or barrier strip. The screw for each terminal is loosened, the speaker wire or a connector attached to the wire is placed under the screw, and then the screw is tightened.
The other type of output is a capture-wire. Capture-wire outputs come in a variety of styles. Some have holes into which a stripped or bare speaker wire is inserted and then a hex-head screw or some other fastener is tightened. Another is a spring-loaded connector; a part of the connector is pushed to open the hole into which the bare wire is inserted (see Figure 12-7). Still another uses a removable capture-wire application that can be detached so that connections can be made outside of the vehicle.
The other type of output is a capture-wire. Capture-wire outputs come in a variety of styles. Some have holes into which a stripped or bare speaker wire is inserted and then a hex-head screw or some other fastener is tightened. Another is a spring-loaded connector; a part of the connector is pushed to open the hole into which the bare wire is inserted (see Figure 12-7). Still another uses a removable capture-wire application that can be detached so that connections can be made outside of the vehicle.
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